The inspector had been busy with his notebook. "When had you last seen them?" he asked.
"They were there when I went down to dinner."
"You are sure?"
"Quite sure. I was uncertain whether to wear them or not, but in the end I decided on the emeralds, and put them back in the jewel-case."
"Who locked up the jewel-case?"
"I did. I wear the key on a chain round my neck." She held it up as she spoke.
The inspector examined it, and shrugged his shoulders.
"The thief must have had a duplicate key. No difficult matter. The lock is quite a simple one. What did you do after you'd locked the jewel-case?"
"I put it back in the bottom drawer where I always keep it."
"You didn't lock the drawer?"'
"No, I never do. My maid remains in the room till I come up, so there's no need."
The inspector's face grew graver.
"Am I to understand that the jewels
